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- Convection currents
- Students work together to show convection currents in the air. They construct a paper propeller that will be caused to spin as a result of the transfer of heat energy through the air.
- Format: lesson plan (grade 6 Science)
- By Jillian Dube.
- Ancient medicine
- In Northern and coastal Vietnam: Waterway settlements and Chinese influences, page 20
- The moxibustion practitioner is in the process of adding or removing a glass cup to her patient's back. Nine cups still are attached to his back. Several round reddish spots can be seen where treatment has been completed and other cups have been removed. Moxibustion...
- By Lorraine Aragon.
- Crucible

- Photograph of a crucible surrounded by fireplace coals. A crucible is a cup-shaped vessel used to heat metals to very high temperatures. Because crucibles must be capable of withstanding a great deal of heat, they are usually made of earthenware, or baked...
- Format: image/photograph
- How do hurricanes form?
- In Hurricanes on sandy shorelines: Lessons for development, page 2
- Hurricanes begin when areas of low atmospheric pressure move off Africa and into the Atlantic, where they grow and intensify in the moisture-laden air above the warm tropical ocean. Air moves toward these atmospheric lows from all directions and curves to...
- By Dirk Frankenberg.
- Furnace

- This is a color photograph of a steam boiler furnace which originally burned wood and soft lump coal. It would heat water which would become steam that would be used to heat the house. The massive structure is from floor to ceiling in height. Several small...
- Format: image/article
- A technological tour of the Biltmore Estate
- This tour of “America's Castle” explains the technological features George Vanderbilt incorporated into his turn-of-the-century home.
- Format: series (multiple pages)
- Recipe: Chiles en Nogada (Chiles in Walnut Sauce)
- In The Changing Face of Mexico, page 2.3
- Ingredients 12 poblano chiles, roasted, seeded, and deveined flour 6 eggs, separated 1 teaspoon salt corn oil 3 pomegranates, seeded parsley Filling...
- Format: recipe
- Green, White, and Red Rice
- In The Changing Face of Mexico, page 2.4
- To make the Mexican flag, use one recipe of each color of rice and arrange them in the colors of the flag, with sprigs of parsley in the center. Arroz Verde (Green Rice) Ingredients 1 cup (115g) rice 2...
- Format: recipe
- The Piedmont's first human inhabitants
- In Clays of the Piedmont: Origins, recovery, and use, page 4
- The first human inhabitants of the Piedmont to make use of its clays were the American Indians. People who lived along the banks of the Potomac and Savannah Rivers discovered the seemingly miraculous transformation of mud into stone by heat about 4500 years...
- By Dirk Frankenberg.
- Making salt
- In Northern and coastal Vietnam: Waterway settlements and Chinese influences, page 7
- This wide landscape view of salt-making fields along the coast south of Nha Trang shows sea water evaporating in some front and back fields, while salt is nearly ready for harvest in the middle fields. This type of salt production is a low-cost technology...
- By Lorraine Aragon.
- The future king
- In The Ramayana, page 1.9
- Rama is shown to the people of Ayudhya and announced as their future king, as depicted on a mural painting at the Emerald Buddha Temple. Dressed in gold clothes and painted with his characteristic green skin, Rama is carried on a golden sedan chair just outside...
- By Lorraine Aragon.
- Solar energy hot box
- This hands-on science lesson is great because it allows students to get out of their seats and move about, as well as allows students to work in cooperative groups. The teacher is more of a facilitator and students are more in charge of their own learning processes.
- Format: lesson plan (grade 5 Mathematics and Science)
- By Nicole Albright.
- Recipe: Ponche (Punch)
- In The Changing Face of Mexico, page 1.4
- Ingredients 12 quarts water 10 ounces tejocotes (or peaches) 9 ounces prunes 5 ounces pecans 4 pieces sugarcane 6 oranges 10 guavas 3...
- Format: recipe
- Recipe: Pan de Muerto (All Souls' Bread)
- In The Changing Face of Mexico, page 1.3
- This bread is eaten traditionally in parties celebrating the dead and one's ancestors. It is placed on altars in the form of an offering and eaten in Mexican homes on November 1 and November 2. Ingredients 1 lb. flour...
- Format: recipe
- Bedding planes
- In Lonely mountains: The monadnocks of the inner Piedmont, page 8
- The quartzite layers that make up the pinnacle of Pilot Mountain also comprise the erosion-resistant cap rocks of Hanging Rock and the two ridges that separate these pinnacles. This uniformity suggests a common origin of this material, and geologists theorize...
- By Dirk Frankenberg.
- Alice P. Evitt oral history excerpt (child labor)
- Alice P. Evitt was born in 1898 and began working at the cotton mills near Charlotte, North Carolina in 1910 when she was 12 years old. She worked 12 hours a day, every day except Sunday, and earned 25 cents a day for her work. In this except, Ms. Evitt talks...
- Format: audio/interview
- Positively popcorn
- This lesson should be used as a part of a unit on the three forms of matter. This is a fun activity on the process of how popcorn pops using gas as a form of matter.
- Format: lesson plan (grade 2 English Language Arts and Science)
- By Jennifer Burton.
- Recipe: Huevos Motuleños (Eggs Motul Style)
- In The Changing Face of Mexico, page 4.4
- Ingredients 6 eggs 6 tortillas 1 large cup refried beans 1 cup peas 3 tomatoes 1 clove garlic 3 small green pickled chilies 1 bay leaf 1/2 onion (preferably...
- Format: recipe
- Young man receiving moxibustion treatment from woman in Ho Chi Minh City

- A young man sits and receives a moxibustion treatment from an older woman in Ho Chi Minh City. The woman is burning "moxa" or mugwort herb within small, round glass cups that are placed at specific points on his bare back. The moxibustion practitioner is in...
- Format: image/photograph
- Reading comprehension strategies for English language learners
- In Reading comprehension and English language learners, page 2
- Strategies like think-pair-share, think-alouds, and GIST can help English language learners, content-area learners, and all students make sense of text while they read.
- By Ellen Douglas.